An arrow has just been shot from a bow and is now traveling
horizontally. Air resistance is not negligible. Identify the forces on
two forces are there Drag and weight
Here given that when arrow shot from the bow and it is traveling horizontally. during that Air resistance is not negligible then Identify the how many forces are acting on the arrow.
here given that the air resistance is not negligible so all the forces on the arrow are all non contact forces.
Once the arrow is shot with constant velocity, the force acting on it is the downward force of gravity and second one is drag force because here air resistance not negligible. then arrow will continue to fly horizontally at the constant velocity until it hits the ground.
The leaf hopper, champion jumper of the insect world, can
jump straight up at 4 m/s2. The jump itself lasts a mere 1 ms before the insect is clear of the ground.
a. Draw a free-body diagram of this mighty leaper while the
jump is taking place.
b. While the jump is taking place, is the force of the ground on
the leaf hopper greater than, less than, or equal to the force of
gravity on the leaf hopper? Explain.
If a car stops suddenly, you feel “thrown forward.” We’d like to understand what happens to the passengers as a car stops. Imagine yourself sitting on a very slippery bench inside a car. This bench has no friction, no seat back, and there’s nothing for you to hold onto. a. Draw a picture and identify all of the forces acting on you as the car travels at a perfectly steady speed on level ground. b. Draw your free-body diagram. Is there a net force on you? If so, in which direction? c. Repeat parts a and b with the car slowing down. d. Describe what happens to you as the car slows down. e. Use Newton’s laws to explain why you seem to be “thrown forward” as the car stops. Is there really a force pushing you forward? f. Suppose now that the bench is not slippery. As the car slows down, you stay on the bench and don’t slide off. What force is responsible for your deceleration? In which direction does this force point? Include a free-body diagram as part of your answer.
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